Air mattress



FIG. 1 is a top perspective view of an air mattress showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is an enlarged, fragmentary vertical cross-sectional view thereof, taken along line 3--3 of FIG. 2;

FIG. 4 is a side elevational view thereof, the opposite side being a mirror image of that shown;

FIG. 5 is an end elevational view thereof, the opposite end being a mirror image of that shown;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top perspective view of an alternate embodiment thereof;

FIG. 8 is a top plan view of the embodiment of FIG. 7;

FIG. 9 is a side elevational view of the embodiment of FIG. 7, the opposite side being a mirror image of that shown and the ends identical in appearance to that shown in FIG. 5;

FIG. 10 is a bottom plan view of the embodiment of FIG. 7; and

FIG;. 11 is a top perspective view of the embodiment of FIG. 7 shown in deflated state. 

The ornamental design for the air mattress, as shown and described. 